Taiwan Global Ionosphere Map (TGIM) provide near-real time GIM with 4-hour delay. The spatial resolution is 2.5° in latitude and 5° in longitude. The temporal resolution is 5 minutes (288 maps per day) [Sun et al., 2017].

Our TGIM products are available via the anonymous ftp server in the IONosphere map EXchange (IONEX) format, the directory